"Suddenly in episode four they are both going after him," Daly adds. "So there's a little competition for Brian Austin Green."

There is no such thing as little between these two formidable women -- but perhaps subtle would better explain it. It is a signal that Williams, as expected, will not wait long on the sidelines before getting into the mix of things and is not afraid to make new frenemies on the block.

As Felicity Huffman told PopcornBiz , Williams will play a longtime friend and often "frenemy" of Huffman's character who was once living the high life and married to a professional athlete.

"But now her marriage is on the rocks and she's come back to Wisteria Lane to lick her wounds," says Huffman.